Outdoor and indoor, AC & DC, Load break and make, Vacuum breaking
Outdoor and indoor, AC & DC, Load break and make, Vacuum breaking
Outdoor and indoor, AC & DC, Load break and make, Vacuum breaking
Live Line Insulators
Cable, pipe and line entries
Line Insulators and Line Surge Arresters
Externally Gapped Line Arrester (EGLA)
132 to 500kV Insulated from the high-voltage line by series gap
Siemens Energy's EGLA line surge arresters incorporate an external spark gap arranged in series to provide galvanic isolation between the active section of the surge arrester and the line voltage during normal operational conditions.
During a lightning event, the spark gap activates, allowing the arrester to limit the ground fault current from several kiloamperes down to just a few amperes.
This rapid response extinguishes any arcs within 10 milliseconds, eliminating the need for circuit breaker operations at both ends of the line, effectively preventing reclosing operations.
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Non-Gapped Line Arrester (NGLA)
132 to 500kV Direct Connection to Overhead Line
Siemens Energy's Non-gapped line surge arresters (NGLA) provide exceptional mounting versatility and operational reliability. Depending on the tower's configuration and the positioning of insulators and power lines, these arresters can be directly affixed to either the insulators or the tower structure. NGLAs effectively limit overvoltages to levels well below the withstand voltage of insulators.
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